Sn51dp Datasheet Pdf [new] [ Direct Link ]

Based on the search results, the "SN51DP" refers specifically to an LCD power chip (IC) commonly used in electronic displays and industrial controllers, often found in an MSOP-10 package. It is sometimes listed in the context of "5PCS/LOT SN51DP SN51 MOSP-10 LCD power chip".

Below is an overview of the technical information for the SN51DP. SN51DP Component Overview Part Number: SN51DP (often identified as SN51)

Description: LCD power supply Integrated Circuit (IC) / Power Management Chip Package Type: MOSP-10 / MSOP-10

Application: Used in display electronics, specifically for providing power management for LCD panels. Key Technical Aspects (Based on Typical LCD Power ICs)

While a direct, detailed PDF datasheet was not extracted, the function as an "LCD power chip" implies standard functionalities related to powering liquid crystal displays.

Function: Generates the necessary voltage levels for LCD operation, including driving voltages (VGH, VGL, AVDD).

Usage: Commonly found in TV mainboards, laptop screens, and monitor LCD driver boards. Sourcing & Documentation

Availability: Listed on platforms like AliExpress and distributor websites, often in small quantities (e.g., 5PCS/LOT). sn51dp datasheet pdf

Searching for "SN51DP datasheet pdf": Search results indicate that direct links to the datasheet can be found through platforms like Alldatasheet or specialized component search engines.

Note: There is a separate result showing "SN5-0R1B" as a wirewound resistor by Bourns Electronic Solutions (Riedon Series). However, based on the specific "SN51DP" query, the LCD power chip description is the primary match. To get you the exact details,

Subject: [REQUEST] SN51DP Datasheet PDF Download

Post Body: Hi everyone,

I am currently troubleshooting a legacy circuit board and I've come across a component labeled "SN51DP". I've spent the last hour scouring the usual datasheet repositories (Alldatasheet, DatasheetCatalog, etc.), but I can't seem to locate a definitive PDF for this specific part number.

Does anyone here have a copy of the SN51DP datasheet they could share? I suspect it might be a specialized driver or interface chip, possibly from TI or a similar manufacturer, but I need the pinout and electrical characteristics to confirm.

If anyone has a link or a scanned copy, it would be a huge help. Based on the search results, the "SN51DP" refers

Thanks in advance!

Note: If you are looking for this part right now, be cautious. The part number "SN51DP" is often associated with suspicious or spammy download sites. It is possible this is a typo for the SN75150 (Dual Line Driver) or the SN55109 series. Always scan downloaded PDFs for viruses.

The "SN51DP" datasheet likely refers to a specific electronic component, possibly a semiconductor device or an integrated circuit, made by Texas Instruments. The SN51DP is closely related to or might be a variant of the SN75151 or similar family of devices, which are known for their use in various applications including logic and buffer/driver configurations.

Given the broad term and potential similarities with other parts, here is a general guide on how to approach the datasheet for components like the SN51DP:

Part 6: Safe Handling and Storage (From the Datasheet)

Buried near the back of every sn51dp datasheet pdf is the "Mechanical Packaging" and "Handling" information.

• ESD Sensitivity: Most CMOS or BiCMOS ICs are sensitive to electrostatic discharge. The datasheet will state "ESD rating: Class 1" or similar. Always use a grounded wrist strap.
• Moisture Sensitivity Level (MSL): For a plastic DIP, this is usually Level 1 (unlimited floor life). However, if the IC has been stored in a damp basement, baking it at 125°C for 24 hours (per the datasheet's soldering guidelines) is advisable before reflow.
• Soldering Temperature: The datasheet specifies the lead temperature (e.g., 260°C for 10 seconds). Exceed this, and internal bond wires will melt.

1. Thermal Management

At 500 mA per channel, the power dissipation (PD) can be significant. The formula is:
PD = VCE(sat) × IOUT per channel.

With a typical VCE(sat) of 1.2V at 350 mA, each channel dissipates ~0.42W. With multiple channels active, total dissipation can exceed 2W. Use: Subject: [REQUEST] SN51DP Datasheet PDF Download Post Body:

• Adequate copper PCB area as heatsink.
• Forced air cooling if driving 4+ channels at high current.
• Consider reducing output current per channel if ambient temperature exceeds 50°C.

Common Problems and Troubleshooting

Even with the SN51DP datasheet PDF, issues can arise. Here’s a quick troubleshooting guide:

| Symptom | Likely Cause | Solution | |----------------------------------|-----------------------------------------------|----------------------------------------------| | Output not switching | Input voltage too low (<3V) | Increase logic high level or use a pull-up | | IC gets extremely hot | Too much current (>500mA) or no COM connection| Add heatsink; connect COM to load supply | | Relay chatters | Insufficient holding current | Increase load supply voltage | | Output stays on when input low | Damaged output transistor | Replace IC; check for load shorts | | Intermittent operation | Loose ground connection | Ensure pin 8 is solidly grounded |

4. Electrical characteristics (what to check)

• Input logic thresholds: VIH, VIL for TTL/CMOS side — ensure compatibility with your MCU’s UART logic levels.
• RS-232 output swing: The RS-232 outputs should meet minimum ±V (e.g., ±5 V) under load — check guaranteed levels at specified load (e.g., with a 3 kΩ load).
• Driver/receiver short-circuit and fault conditions: Current limits, protection behavior.
• ICC (supply current) and ISS (shutdown current): Important for battery-powered designs — typical and maximum values at various supply voltages and modes.
• Common-mode input range for receiver inputs: Useful when interfacing to noisy lines.
• Rise/fall times, propagation delay, and driver skew: Relevant for higher baud rates and timing-critical links.

5. Pin Configuration and Function Descriptions

A pinout diagram is essential for PCB layout. For a device like the SN51DP, expect pins such as:

• VIN: Power input.
• SW: Switching node (connects to inductor).
• FB (Feedback): Sensing pin for output voltage regulation.
• EN (Enable): Turn the device on/off.
• PG (Power Good): Open-drain output indicating stable output.
• GND (Ground): Must have low-impedance connection.

Warning: Misidentifying the pin 1 orientation (often marked by a dot or bevel) is a common first-build failure.

4. Electrical Characteristics (The Performance Reality)

This is where you find the numbers that matter. Typically presented in a table with conditions (V_IN = 12V, T_A = 25°C). Key parameters for a power device like the SN51DP:

• Output Voltage Accuracy: e.g., ±2%. Crucial for powering sensitive loads (FPGAs, ADCs).
• Quiescent Current (I_Q): The current the chip consumes with no load. Critical for battery-powered designs.
• Switch On-Resistance (R_DS(on)): Determines efficiency and heat generation. Lower is better.
• Reference Voltage (V_REF): Used for setting output voltage via external resistors.
• Switching Frequency (f_SW): Affects the size of external inductors and capacitors.

Graphs are your friend: Datasheets include typical performance curves. Look for efficiency vs. load current, output voltage vs. temperature, and frequency vs. input voltage.

8. Packaging and Ordering Information

Finally, the datasheet provides mechanical drawings and tape/reel specifications. Verify:

• Package type: SOIC-8, QFN-16, TO-263, etc.
• Lead-free (Pb-free) or RoHS compliance.
• Moisture Sensitivity Level (MSL) — important for proper reflow soldering.